div.floating-buttons {
    .mat-mini-fab {
        z-index: 2;
        position: absolute;
    }

    .add-node, .remove-node,
    .undo, .redo {
        top: 115px;
    }

    .add-node {
        left: 15px;
    }

    .remove-node {
        left: 65px;
    }

    .undo {
        right: 65px;
    }

    .redo {
        right: 15px;
    }

    .zoom-in, .zoom-out, .center {
        right: 15px;
    }

    .zoom-out {
        bottom: 100px;
    }

    .zoom-in {
        bottom: 150px;
    }

    .center {
        bottom: 45px;
    }

}
